RT Clearing Prices for Capacity by 15 Minute Settlement Interval

Info

New interface with RTC+B Implementation

This section describes interfaces used to retrieve Real-Time Clearing Prices for Capacity by 15-Minute Settlement Interval. The request message would use the following message fields:

Message Element Value
Header/Verb get
Header/Noun RTPricesCap15Min
Header/Source Market participant ID
Header/UserID ID of user
Request/StartTime Start time of interest
Request/EndTime End time of interest

The corresponding response messages would use the following message fields:

Message Element Value
Header/Verb reply
Header/Noun RTPricesCap15Min
Header/Source ERCOT
Reply/ReplyCode Reply code, success=OK, error=ERROR or FATAL
Reply/Error Error message, if error encountered
Payload/ MCPC15Mins

The structure of MCPC15Mins is described by the following diagram:

MCPC15Mins Structure

MCPC15Min Structure

The following elements are used to report Real-Time Clearing Prices for Capacity by 15-Minute Settlement Interval:

  • Delivery Date
  • Delivery Hour
  • Delivery Interval
  • Repeated Hour Flag
  • AS Type
  • MCPC

The following is an XML example:

<ns1:MCPC15Mins xmlns:ns1="http://www.ercot.com/schema/2007-06/nodal/ews">
               <ns1:MCPC15Min>
                  <ns1:DeliveryDate>10/07/2025</ns1:DeliveryDate>
                  <ns1:DeliveryHour>9</ns1:DeliveryHour>
                  <ns1:DeliveryInterval>4.0</ns1:DeliveryInterval>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
                  <ns1:ASType>ECRS</ns1:ASType>
                  <ns1:MCPC>469.63</ns1:MCPC>
               </ns1:MCPC15Min>
               <ns1:MCPC15Min>
                  <ns1:DeliveryDate>10/07/2025</ns1:DeliveryDate>
                  <ns1:DeliveryHour>9</ns1:DeliveryHour>
                  <ns1:DeliveryInterval>4.0</ns1:DeliveryInterval>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
                  <ns1:ASType>NSPIN</ns1:ASType>
                  <ns1:MCPC>15.0</ns1:MCPC>
               </ns1:MCPC15Min>
               <ns1:MCPC15Min>
                  <ns1:DeliveryDate>10/07/2025</ns1:DeliveryDate>
                  <ns1:DeliveryHour>9</ns1:DeliveryHour>
                  <ns1:DeliveryInterval>4.0</ns1:DeliveryInterval>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
                  <ns1:ASType>REGDN</ns1:ASType>
                  <ns1:MCPC>5000.0</ns1:MCPC>
               </ns1:MCPC15Min>
               <ns1:MCPC15Min>
                  <ns1:DeliveryDate>10/07/2025</ns1:DeliveryDate>
                  <ns1:DeliveryHour>9</ns1:DeliveryHour>
                  <ns1:DeliveryInterval>4.0</ns1:DeliveryInterval>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
                  <ns1:ASType>REGUP</ns1:ASType>
                  <ns1:MCPC>2072.82</ns1:MCPC>
               </ns1:MCPC15Min>
               <ns1:MCPC15Min>
                  <ns1:DeliveryDate>10/07/2025</ns1:DeliveryDate>
                  <ns1:DeliveryHour>9</ns1:DeliveryHour>
                  <ns1:DeliveryInterval>4.0</ns1:DeliveryInterval>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
                  <ns1:ASType>RRS</ns1:ASType>
                  <ns1:MCPC>5000.0</ns1:MCPC>
               </ns1:MCPC15Min>
            </ns1:MCPC15Mins>